Spray drift and SataCrop

Stewardship of all pesticide applications to prevent off-target spray damage is a priority across all of agriculture to ensure the safety of communities and environments.

Cotton is particularly sensitive to spray drift from Group I herbicides (phenoxy herbicides including 2,4-D). In 2018, while less than 10% of the Australian cotton crop was reported as impacted by spray drift, the financial impact was significant - costing an estimated $18 million in production losses.

Suffering spray drift damage is frustrating and has a detrimental financial impact on our growers, which is why Cotton Australia has continued to invest considerable time and funds into tackling the issue. Off-target spray drift is an issue affecting all of agriculture across a range of pesticides. It is important for all of Australian agriculture that we remain vigilant to protect our farms and the ongoing access to key chemicals.

Cotton Australia's efforts

Each season, Cotton Australia’s policy and communications teams work to devise and implement strategic awareness campaigns around spray drift and best practice for spraying. Cotton Australia works closely with cotton growers, spray applicators, chemical registrants, resellers, regulators and other agricultural industries to develop and deliver the campaigns.

Campaigns include:

  • Supporting growers to report spray drift incidents, and keeping an industry log of incidents that have occurred.
  • Working collaboratively with stakeholders within the cotton industry and other agricultural sectors to understand, navigate and assist growers through the challenges faced when planning spraying activities.
  • Delivering training and workshops on spray application best practice.
  • Delivering a targeted media campaign through a range of networks in cropping areas.
  • Cotton Australia leading the promotion of SataCrop, a mapping tool informing all stakeholders of the location of potentially sensitive crops.

How can cotton growers help overcome the spray drift problem?

Pre-season communication

Ensure neighbours are aware of the location of any sensitive crop plantings and/or sensitive areas.

In-season communication

Request to be notified of spray applications prior to commencement and be prepared to offer this in return.

Map your fields

Map your paddocks in SataCrop, so spray applicators can identify nearby sensitive crops and tailor spray plans to only occur when weather conditions are suitable.

Encourage neighbours to check SataCrop each season to know where your crops are located.

Farm hygiene

Decontaminate spray rigs and remind contractors to ensure strict decontamination procedures are followed.

Product selection

Choose the right chemical for the job. Be wary of fallow herbicides that may impact subsequent crops (e.g. rain-activated products).

Report incidents to Cotton Australia

It is critical that growers report any incident, or suspected incident, as soon as it occurs to their closest Cotton Australia Regional Manager and fill out a Cotton Australia Spray Drift Incident Report. It is essential that incidents are properly logged and investigated, and Cotton Australia has a straightforward process that is simple and confidential. It is important that we know if incidents occur in order to make representations on behalf of the industry. While Cotton Australia cannot take legal action, provide professional advice or submit adverse experience reports to regulatory authorities, we can point growers in the right direction and tailor spray drift awareness initiatives into key areas based on feedback received by growers.

Growers whose crops have been damaged by off-target spray drift should report it to the relevant authorities in their state:

SataCrop

SataCrop is a tool to mitigate the risk of spray drift by allowing operators to understand where sensitive crops are located in proximity to their spray operation.

The SataCrop tool is an industry initiative developed by Cotton Australia and Precision Cropping Technologies (PCT).

SataCrop has the ability to map all crop types, including cotton, grains and tree crops. Growers can log in and plot the location of fields they have planted with different crops each season. Other farmers and spray contractors can review the site when planning spray applications to see the location of potentially sensitive neighbouring crops. This, coupled with vigilance around spray conditions, wind directions, and application helps to reduce adverse effects of spray drift.

New 2,4-D label restrictions

In October 2018, the APVMA suspended the labels of all products containing the active ingredient 2,4-D and replaced them with a permit.

This action was taken in response to widespread damage to sensitive crops over several years, including grapes, other horticultural crops, summer pulses and cotton.

The new instructions for use include:

  • A requirement not to spray in inversion conditions and additional information on recognising inversion conditions.
  • Downwind mandatory no-spray zones for both aquatic and terrestrial off-target vegetation (including sensitive crops, gardens, landscaping vegetation, protected native vegetation or protected animal habitat).
  • A requirement to use nozzles producing droplets no smaller than the very course spray quality category.
  • Mandatory record keeping requirements.
  • Advisory statements about spray application over summer.

Summer Weed Control Best Practice Guide

A Summer Weed Control Best Practice Guide is available for growers, employees, contractors and agronomists to provide guidelines for the safe and effective application of herbicides in summer. The guide provides advice on how to recognise a surface temperature inversion and provides recommendations to minimise risk of spray drift by avoiding spraying under inversion or still conditions. Additionally, the guide provides advice on monitoring weather conditions and proper record keeping processes.

Spray risk and inversions

It is important growers and spray applicators understand the risks around spray inversions, how they are formed, and how to avoid them. Visit this website for more tools and publications around spray drift, which includes a handy document produced by Nufarm - the '24 Hour Risk Profile for Summer Spraying' - which can be used for reference.